Auxiliary drive for locomotives.



AUXILIARY DRIVE FOR LOCOMOTIVES.

APPLI'CATION 11120 Nov. 1011912.

LQ??",170 Patented 11150.1(),1518.

I 4 SHEETSSHEET 1.

T. J. BEAUDET,

AUXILIARY DRWE FOR LOCOMOTIVES.

APPLICATION FILED NOV. 10. I917- Patented D@.10,191s.

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- BY M MQ TTORNEY.

T. J. BEAUDET. AUXILIARY DRIVE FOR LOCOMOTIVES.

APPLICATION FILED NOV. 10. L9H- 4 SHEETSSHEET 3- ll i . mnl In INVENTOR.7 117 KAI/Eff V T ATTORNEY.

T. J. BEAUDET. AUXILIARY DRIVE FOR LOCOMOTIVES.

APPLICAUON FILED uov.1o. 1911.

137,1? Patented Dec. 10, 1918.

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TELESLPHORE J. BEAUDET, OF SAN FRANCISCO, CALIFORNIA, ASSIQNOR OFONEJIALF Ti} H. B. THORNBERRY, F STOCKTON, CALTFORNIA.

To all whom it may concern:

Be it known that I, Tnnusrnonu J. BEAU our, citizen of the UnitedStates, residing at San Francisco, in the county of San Francisco, Stateof California, have invented anew and useful Auxiliary Drive forLocomotives, of which the following is a specification in such full andclear terms as will enable those skilled in the art to construct and usethe same.

This invention relates to an auxiliary 'ditional pulling power whenstarting, and to provide means whereby the starting motors may besupplied with suficient current to somewhat assist in the running of thelocomotive, after the engine has ot under way.

It will be understood by ross skilled in the art that the pulling powerof a locorno: tive depends, as in other engines, upon pressure, cylindersize, and revolutions per minute; but that, in starting, it is necessaryto start from the position of zero revolutions per minute to some finitenumber, such as three or four hundred revolutions per nnnute, and whenstarting from a position of rest it is very difficult for theordinarylocomotive to get a heavy train under way.

In the present invention, auxiliary elec-- trio motors are supplied onthe engine tender, and auxiliary electric power generators are suppliedon the engine which may be supplied with additional steam when starting,but through which the exhaust steam passes when the engine is running,

thereby producing suiiicient electric power.

to preventthe motors from being a drag upon the apparatus when the trainis 1111-,

der full head way.

Other objects of the invention will appear as the description proceeds.

An embodiment of the invention is shown in the drawings in which thesame reference nur ml is applied to the same portion throughout. but Iam aware that there mayv be modifications thereof.

Figure 1 1s a side elevation of a locomotive illustrating the principalparts thereof showing the location of the front auxiliary generator,

Fig. 5 is a front elevation in section of the engine adjacent theprimary turbine electric generators, r

Fig. 6 is :1V diagrammatic illustration of the mechanism for controllingthe throttle specification of Letters Patent. Fatented Dec. 10, 31918.

Application filed November 10, 1917. Serial No. 201,896.

valve and the auxiliary turbine generators and also illustrating theswitch boards 0 the motors and generators within the engine cab, and iFig. 7 is a diagrammatic view of the wiring from the generators to themotors.

The numeral 1 indicates the boiler of the engine, 2 thesmoke stack, 3the cab, 4 the tender, 5 the front drivers, 6 the rear drivers, 7 and 8the driving trucks of the tender 4.

The locomotive may have such additional.

supporting wheels 9 as may be desired for the service to he rendered.

While the operation has been shown in conjunction with an engine with adouble pair of main driving trucks, it will be apparent that an enginewith only a single pair of driving trucks may equally well besubstituted for the oneshowing the double set.

The engine illustrated herein has a high pressure cylinder 10. and alarger low pressure cylinder 11. The exhaust pipe from is provided withduplicate cylinders on opposits sides in the manner common to suchengines as this. the low pressure cviinders being shown at 11 andl'l. sothat the em haust frornthe high pressure cvlinder it) on the oppositeside from the cylinder 10 will pass into a turhine generator 13 whichdrives the electric generator 14'. After the steam has been used in theturbine generators 13 and 13, it passes by way of the pipe and 11.

lines 15, 15' to the low pressure cylinders 11 The low pressurecylinders are provided with the exhaust pipes 16, 16 which deliver theexhaust steam to turbine generators 17, 17' respectively. Turbinegenerators 17, 17 are mounted upon the front of the frame ahead of theboiler, and together drive a single generator 18.

From the turbine generators 17, 17 exhaust pipes lead to, and areconnected with, the exhaust pipe 19, which terminates under the smokestack 2 for the purpose of increasing the draft of the engine fire.

In order to generate sufiicient electrical power when the engine isstarting to increase its pulling effect, auxiliary pipes 20, 20, 21, 21lead to the turbine generators 12, 12 and 17 17 respectively. Thesepipes lead into the cab, and into convenient reach of the engineer, andthey have valves 23, 24 for their operation: a throttle valve lever 25being provided for the operation of the throttle valve of the mainengine cylinders. The rear trucks 7 and 8 of the tender have frames 26,27, 28 built in a well known manner, and are provided with brake shoes29, 30, and each have wheels 31. 32, which wheels are driven by means ofthe electric motor in the casings 33, 34. said trucks being of awellknown construction, and said motors receive electric power from thecables 35. 36.

The control apparatus 37, 38, 39, is mounted within the cab for theconvenient use of the engineer. I

A diagrammatic view of the operation of the electrical circuits is shownin Fig. 7 in which 18 is the forward electric generator,

14, 14 the high pressure electric generators, while electric circuitwires 40, 41, 42, 43 lead to the switch board 44, suitableswitches beingprovided at 45, 46, for connecting the generator circuits with thecircuit wires 47, 48. 49. 50, leading to the motors 33. 34. on each ofthe trucks of the tender.

The operation of the apparatus is as follows .-It will be understoodthat in starting a locomotive, only a small amount of steam can beadmitted to the cylinders, because of the comparatively long time ittakes to turn the wheels over once, and during this time the engineerwill admit. steam to the turbine generators by the opening of the valves23. 24, and the electric control apparatus will be placed in the properposition to connect the generators with the tender motors. The turbinegenerator 13 has a bypass exhaust pipe 54, while the generator 13 has asimilar by-pass exhaust pipe 54. These by-pass exhaust pipes arecontrolled by valves 55, 55 which are operated by a lever 56 within thecab. cables 57, 57 extending to said valves. By the same operation,by-pass valves 58, 58' are closed on the exhaust pipes 15, 15', by thelinks 58*, 58*, thereby enabling the engineer to deliver high pressuresteam by way of the pipes 59, 59', which extend within the boiler, andwhich are supplied with steam by the valve 60 operated by the wheel 61within the cab, to the low pressure cylinders 11, 11.

The result of the foregoing i that, when the engine is getting underway, the cylinders 10, 10, 11, 11 may be supplied with high pressuresteam in the proper small quantity, while at the same time the steamturbine generators receive what power they may from the exhauststeamfrom the cylinders, and in addition receive such live steam as may benecessary to drive them at a sufficient rate to give the desired pullingeffect to the motors on the tender trucks.

As soon as the engine gets under way the engine is driven as the usualcompound engine, and such power as may be generated by the turbines fromthe exhaust steam is delivered to the tender trucks.

The advantage of this particular construction lies in the fact thatpractically no change is made in the present form of locomotive, theonly addition thereto being the addition of parts which may be readilymade as separate units and secured thereto, and in the use of anelectrically driven tender.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent of the United States is as follows, expressreservation being made of permissible modifications.

1. An uxiliary drive for locomotives comprising a steam driven compound,locomotive. steam driven turbine electric generators, pipe connectionswhereby said turbine generators are driven from the exhaust steam of thehigh pressure cylinders and from the exhaust steam from the low pressurecylinders, suitable by-pass WIl OS whereby the low pressure cylinder andthe steam turbines may .be supplied with live steam during the time theengine is being started, and means to permit the steam turbines toexhaust directly to the atmosphere when being so started.

2. An auxiliary drive for locomotives comprising a steam drivenlocomotive having high and low pressure cylinders, an auxiliary steamelectric generator, means whereb the generator may be driven either bylive or exhaust steam after the-latter steam has passed through the highand low pressure cylinders, and a series of auxiliary motorselectrically connected with the generator to assist in pulling thetrain.

3. An auxiliary drive for locomotives comprising a steam drivenlocomotive baring high and low pressure cylinders, an with the generatorto assist in pulling the auxiliary turbo-electric generator, by-passtrain. I valves whereby said generator may be In testimony whereof Ihave hereunto set 10 driven by live steam or by exhaust steam my handthis 10" day of October, A. D. after the latter steam has passed throughthe 1917.

high and low pressure cylinders, and a Series of auxiliary motorselectrically connected TELESPHORE J. BEAUDET.

